/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.je.bpm.engine.impl.cmd;

import com.google.common.base.Strings;
import com.je.bpm.engine.impl.interceptor.CommandContext;
import com.je.bpm.engine.impl.persistence.entity.IdentityLinkEntity;
import com.je.bpm.engine.impl.persistence.entity.TaskEntity;
import com.je.bpm.engine.task.Task;

import java.util.ArrayList;
import java.util.List;

/**
 * 获取当前节点提交过来个target
 */
public class GetAssigneeByTaskIdAndCurrentNodeIdCmd extends NeedsActiveTaskCmd<List<String>> {

    private static final long serialVersionUID = 1L;

    private String currentNodeId;

    public GetAssigneeByTaskIdAndCurrentNodeIdCmd(String taskId, String currentNodeId) {
        super(taskId, null, null);
        this.currentNodeId = currentNodeId;
    }

    @Override
    protected List<String> execute(CommandContext commandContext, TaskEntity task) {
        List<String> result = new ArrayList<>();
        String piid = task.getProcessInstanceId();
        //候选任务
        if (currentNodeId.startsWith("joint")) {
            if (Strings.isNullOrEmpty(task.getAssignee())) {
                List<IdentityLinkEntity> linkEntities = commandContext.getProcessEngineConfiguration().getIdentityLinkEntityManager().findIdentityLinksByTaskId(taskId);
                for (IdentityLinkEntity identityLinkEntity : linkEntities) {
                    result.add(identityLinkEntity.getUserId());
                }
            } else {
                result.add(task.getAssignee());
            }
            return result;
        }
        List<Task> list = commandContext.getProcessEngineConfiguration().getTaskService().createTaskQuery().processInstanceId(piid)
                .taskDefinitionKey(currentNodeId).list();
        for (Task cuTask : list) {
            result.add(cuTask.getAssignee());
        }
        return result;
    }


    @Override
    protected String getSuspendedTaskException() {
        return "Cannot delegate a suspended task";
    }

}
